How long does Oat Milk last?
In the fridge: 7 days
In the freezer: 60 days
In the pantry: 365 days
Oat milk lasts 7–10 days in the fridge after opening, when stored below 4°C. Unopened shelf-stable cartons hold a year or more. Barista-style oat milk often lasts a few days less than regular due to higher fat content. Once opened, expect natural separation and gradual flavor decline; sour smell, slimy texture, or off taste mean spoilage. Shake well before each use to redistribute solids.
How to store it
- Middle shelf in original carton, sealed
- Pantry until opened
- Shake hard before each pour
- Avoid the fridge door
- Freeze only for cooking
Signs it has gone bad
- Sour or off smell
- Slimy or thickened texture
- Bitter or off taste
- Visible mold or unusual color
Signs it has gone bad
How long does oat milk last after opening?
Opened oat milk lasts 7–10 days in the fridge below 4°C. Unopened shelf-stable cartons keep a year or more.
Why is my oat milk slimy?
Slimy texture usually means it's gone bad — bacteria break down the oats. Throw it out.
Can you freeze oat milk?
Yes for cooking, but the texture separates after thawing; not great for drinking plain or in coffee.